This text investigates the biological characteristics, evolutionary history, and ecological distribution of diverse marine mammal species across the globe. Bernard Stonehouse, a noted polar scientist and biologist, utilizes his extensive field experience and academic background to provide a structured overview of these animals. The book establishes a framework for identifying and understanding the distinct behaviors and environmental requirements of various aquatic mammal groups.

Experts recognize this work as a reliable reference for students and naturalists seeking a broad introduction to marine mammalogy. Readers frequently note the clarity of the prose and the systematic organization of the species accounts.